A fluidic device, the fluidic device comprising a planar fluidic conduit for conducting a fluid, wherein the fluidic conduit has a plurality of fluidic disturbance features located along at least a section of the fluidic conduit for disturbing a laminar flow of the fluid along the section. An interface acquires patient specific medical data associating a particular medical condition with a specific patient. The narrower portion is smaller in width than the wider portion.